-7.48% is the change from 321 to 297
Calculation steps:
[( 297 - 321 ) ÷ 321] x 100 = -7.48%
Formula
Percentage change = [(297 - 321) / 321] x 100
Subtract the new number by the original number
297 - 321 = -24
-24 ÷ 321 = -0.07476635514018691
-0.07476635514018691 x 100 = -7.48%